Are warts contagious?

In many respects, yes. If you have one on your feet, it would be unwise to pick at it and it can spread to someone else if that person has the potential towards getting that virus in the same way certain people have the potential for catching a certain cold. The wart virus likes to linger around moist environments such as pools, spas, locker rooms, public showers (such as those at the gym). Wearing flip flops or crocs in these areas is always a good idea.